CN109660014A - A kind of integrated energy storage type MW class uninterruptible power system - Google Patents
A kind of integrated energy storage type MW class uninterruptible power system Download PDFInfo
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- CN109660014A CN109660014A CN201910022625.0A CN201910022625A CN109660014A CN 109660014 A CN109660014 A CN 109660014A CN 201910022625 A CN201910022625 A CN 201910022625A CN 109660014 A CN109660014 A CN 109660014A
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- output
- inverter circuit
- rectification
- isolation
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/062—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for AC powered loads
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
- H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
- H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
- H02J9/08—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems requiring starting of a prime-mover
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
- H02M5/40—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc
- H02M5/42—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters
- H02M5/44—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac
- H02M5/453—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal
- H02M5/458—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
- H02M5/4585—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases with intermediate conversion into dc by static converters using discharge tubes or semiconductor devices to convert the intermediate dc into ac using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only having a rectifier with controlled elements
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M1/00—Details of apparatus for conversion
- H02M1/0067—Converter structures employing plural converter units, other than for parallel operation of the units on a single load
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Inverter Devices (AREA)
Abstract
The invention discloses a kind of integrated energy storage type MW class uninterruptible power systems.The system includes sequentially connected input control and isolation circuit, rectification inverter circuit group, output filtering and isolation circuit and output switching circuit；The rectification inverter circuit group includes the first rectification inverter circuit and the second rectification inverter circuit being connected in parallel；The input and isolation circuit are used to provide AC power source for the rectification inverter circuit group, and carry out electrical isolation；The rectification inverter circuit group is used to carry out commutation inversion to the AC power source, obtains three-phase alternating-current supply；The output filtering and isolation circuit carry out electrical isolation for being filtered to the three-phase alternating-current supply；The output switching circuit is for exporting filtered three-phase alternating-current supply to load.The present invention can be realized the power combing of uninterruptible power supply and diesel engine, provide the energy of high overload for high-power living load, and can effectively inhibit circulation.
Description
Technical field
The present invention relates to field of power systems, more particularly to a kind of integrated energy storage type MW class uninterruptible power supply system
System.
Background technique
Past, uninterruptible power supply (UPS) are mainly used in field of industrial manufacturing, and with the propulsion of informatization, UPS
As the important component of informatization infrastructure, its newly-increased market space mostly come from domestic every profession and trade in recent years
Informatization.From the point of view of the segmenting market, it is big that UPS product is mainly used in government, telecommunications, finance, internet, manufacture etc. 5
Industry sales volume accounting is more than 50%, and traffic, medical treatment, insurance industry speedup are most fast.
With the iterative method of national energy strategy and informatization strategy, as the key equipment of informatization, UPS's
Efficiently, energy conservation, low consumption and environmental protection by be leading vendor research and development direction.And the core technology that UPS is used is inversion skill
Unstable electric energy can be converted to stable electric energy by art.The solar energy inversion transformation technique homologous with UPS inversion transformation technique, wind energy
Generating set Semiconductor Converting Technology is applied increasingly extensive at present, is national actively to encourage to develop " new energy, energy conservation and environmental protection " green skill
Art meets following trend, it is contemplated that the application range in the following field UPS will be growing.
Traditional uninterruptible power system has the following problems:
(1) output harmonic wave of uninterruptible power system not can be carried out the repetition control under effective inhibition, such as rest frame
System can generate delay, and dynamic response is poor, and ratio resonant control system is unstable, and design difficulty is high, system complex and synchronous rotation
The multiple rotational coordinates for turning all kinds of controls under coordinate are not easy to realize.
(2) difference of parallel power unit component characteristic, different, the different units of load connection line length export internal impedance and deposit
Difference caused by power and output current unevenness point, lead to the problem that circulation is generated between each parallel power unit.
(3) it since traditional uninterruptible power supply electric topology structure limits, is typically only capable to realize the capacity of hundreds of KVA, be difficult
Meets the needs of high-capacity dynamical load, i.e., the uninterrupted power supply of high-power living load key electricity consumption occasion is insurmountable to ask
Topic.
Summary of the invention
The object of the present invention is to provide a kind of integrated energy storage type MW class uninterruptible power systems, uninterrupted to realize
The power combing of power supply and diesel engine provides the energy of high overload for high-power living load, and can effectively inhibit ring
Stream.
To achieve the above object, the present invention provides following schemes:
A kind of integrated energy storage type MW class uninterruptible power system, including sequentially connected input control and isolation electricity
Road, rectification inverter circuit group, output filtering and isolation circuit and output switching circuit；The rectification inverter circuit group includes simultaneously
Join the first rectification inverter circuit and the second rectification inverter circuit of connection；The input and isolation circuit are used to be the rectification
Inverter circuit group provides AC power source, and carries out electrical isolation；The rectification inverter circuit group be used for the AC power source into
Row commutation inversion, obtains three-phase alternating-current supply；The output filtering and isolation circuit are used to carry out the three-phase alternating-current supply
Filtering, and carry out electrical isolation；The output switching circuit is for exporting filtered three-phase alternating-current supply to load.
Optionally, the input control and isolation circuit include sequentially connected input control unit and isolation transformation
Device；The input control unit for providing AC power source, the isolating transformer include primary coil, the first secondary coil with
And second secondary coil；The primary coil connects the first output end of the input control unit, first secondary coil
The input terminal of first rectification inverter circuit is connected, second secondary coil connects the defeated of second rectification inverter circuit
Enter end.
Optionally, first rectification inverter circuit includes sequentially connected first rectification and charhing unit, the first filtering
Energy-storage units and the first DC/AC inversion unit；Second rectification inverter circuit includes sequentially connected second rectification and fills
Electric unit, the second filtering energy-storage units and the 2nd DC/AC inversion unit；The input terminal of first rectification and charhing unit connects
Connect input terminal connection second secondary coil of first secondary coil, second rectification and charhing unit；Described
The output end of the output end of one DC/AC inversion unit and the 2nd DC/AC inversion unit be all connected with output filtering and
The input terminal of isolation circuit.
Optionally, output filtering and isolation circuit include the first output filter unit, the second output filter unit with
And output isolation transformer；The input terminal of the first output filter unit connects the output of the first DC/AC inversion unit
End, the input terminal of the second output filter unit connect the output end of the 2nd DC/AC inversion unit, first output
The output end of the output end of filter unit and the second output filter unit is all connected with the original of the output isolation transformer
Sideline circle, the secondary coil of the output isolation transformer connect the input terminal of the output switching circuit.
Optionally, the first switching switching group and the second switching switching group that the output switching circuit includes；Described
The input terminal of one switching switching group connects the secondary coil of the output isolation transformer, the input of the second switching switching group
End connects the second output terminal of the input control unit；The output end of the first switching switching group and second switching
The output end of switch connects load.
Optionally, first rectification inverter circuit and second rectification inverter circuit are 500KW commutation inversion electricity
Road.
Optionally, the first DC/AC inversion unit and the 2nd DC/AC inversion unit are six pipe topology knot of three-phase
Structure.
Optionally, first rectification and charhing unit and second rectification and charhing unit are six pipe of three-phase topology
Structure.
Optionally, the first filtering energy-storage units and the second filtering energy-storage units are by battery and great Rong
Measure busbar filter capacitor composition.
Compared with prior art, the present invention has following technical effect that the first rectification inverter circuit and in this system
Two rectification inverter circuit parallel runnings solve traditional uninterruptible power supply because electric topology structure limits, are difficult to meet large capacity
The demand of living load solves the problems, such as the uninterrupted power supply of high-power living load key electricity consumption occasion, holds for MW class
The key industry load of amount provides uninterrupted power supply.This system has large capacity bidirectional energy-storage device, has access to power grid realization
It is incorporated into the power networks；The device can realize the power combing of uninterruptible power supply and diesel engine, be big with diesel engine synchronously control simultaneously
The energy of power living load offer high overload；In the first rectification inverter circuit and the second rectification inverter circuit Parallel Control
In, this system selects optimum virtual resistance value, so that circulation and power loss reach minimum, effectively inhibits circulation；
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the circuit diagram of integrated energy storage of embodiment of the present invention type MW class uninterruptible power system；
Fig. 2 is the structural block diagram of integrated energy storage of embodiment of the present invention type MW class uninterruptible power system.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of integrated energy storage type MW class uninterruptible power systems, uninterrupted to realize
The power combing of power supply and diesel engine provides the energy of high overload for high-power living load, and can effectively inhibit ring
Stream.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
As shown in Figure 1 and Figure 2, a kind of integrated energy storage type MW class uninterruptible power system, including sequentially connected input
Control and isolation circuit 1, rectification inverter circuit group 2, output filtering and isolation circuit 3 and output switching circuit 4.The rectification
Inverter circuit group 2 includes the second rectification inverter circuit of the first rectification inverter circuit of 500KW and 500KW being connected in parallel.It is described
Input and isolation circuit 1 are used to provide AC power source for the rectification inverter circuit group 2, and carry out electrical isolation；The rectification
Inverter circuit group 2 is used to carry out commutation inversion to the AC power source, obtains three-phase alternating-current supply；The output filtering and isolation
Circuit 3 carries out electrical isolation for being filtered to the three-phase alternating-current supply；The output switching circuit 4 will be for that will filter
Three-phase alternating-current supply after wave is exported to load.
The input control and isolation circuit 1 respectively power to two groups of 500KW commutation inversion mould groups, input power supply with
Effective electrical isolation is formed between change system.The input control and isolation circuit 1 include sequentially connected input control
Unit 1-1 and isolating transformer 1-2；The input control unit 1-1 is for providing AC power source, the isolating transformer 1-
2 include primary coil, the first secondary coil and the second secondary coil；The primary coil connects the input control unit 1-
1 the first output end, first secondary coil connect the input terminal of first rectification inverter circuit, the described second secondary sideline
Circle connects the input terminal of second rectification inverter circuit.
First rectification inverter circuit includes sequentially connected first rectification and charhing unit 2-1, the first filtering energy storage
Unit 2-2 and the first DC/AC inversion unit 2-3；Second rectification inverter circuit include it is sequentially connected second rectification and
Charhing unit 2-4, the second filtering energy-storage units 2-5 and the 2nd DC/AC inversion unit 2-6；First rectification and charging are single
The input terminal of first 2-1 connects first secondary coil, second rectification and the input terminal connection of charhing unit 2-4 described the
Two secondary coils；The output of the output end and the 2nd DC/AC inversion unit 2-6 of the first DC/AC inversion unit 2-3
End is all connected with the input terminal of the output filtering and isolation circuit 3.
The first DC/AC inversion unit 2-3 and the 2nd DC/AC inversion unit 2-6 is six pipe topology knot of three-phase
Structure is completed by DC inverter into three-phase alternating current electricity output.
First rectification and charhing unit 2-1 and second rectification and charhing unit 2-4 are six pipe of three-phase topology
Structure.The first filtering energy-storage units 2-2 and the second filtering energy-storage units 2-4 are female by battery and large capacity
Arrange filter capacitor composition.First rectification and charhing unit 2-1 and second rectification and charhing unit 2-4 intersect to three
Galvanic electricity completes rectification work, while in the first filtering energy-storage units 2-2 and the second filtering energy-storage units 2-4
Battery and large capacity busbar filter capacitor charge.
Output filtering and isolation circuit 3 are filtered three-phase alternating-current supply after inversion, to two commutation inversion electricity
The output on road carries out electric energy confluence, while forming electrical isolation between the system and load.The output filtering and isolation electricity
Road 3 includes the first output filter unit 3-1, the second output filter unit 3-2 and output isolation transformer 3-3.Described first
The input terminal of output filter unit 3-1 connects the output end of the first DC/AC inversion unit 2-3, the second output filtering
The input terminal of unit 3-2 connects the output end of the 2nd DC/AC inversion unit 2-6, the first output filter unit 3-1's
The output end of output end and the second output filter unit 3-2 are all connected with the primary side line of the output isolation transformer 3-3
Circle, the secondary coil of the output isolation transformer 3-3 connect the input terminal of the output switching circuit 4.
The output switching 4 is made of double switch, and power output is completed in system worked well and is extremely loaded, achievable
It works system bypass, to facilitate system overhaul.The the first switching switching group and second that the output switching circuit 4 includes are cut
Change switching group；The input terminal of the first switching switching group connects the secondary coil of the output isolation transformer 3-3, and described the
The input terminal of two switching switching groups connects the second output terminal of the input control unit 1-1；The first switching switching group
The output end of output end and the second switching switch connects load.
The specific embodiment provided according to the present invention, the invention discloses following technical effects:
1) between the first rectification inverter circuit and the second rectification inverter circuit parallel running solve tradition not in this system
Power-off source is difficult meet the needs of high-capacity dynamical load because electric topology structure limits, and solves high-power living load and closes
The problem of uninterrupted power supply of key electricity consumption occasion, provides uninterrupted power supply for the key industry load of megawatt level capacity.The device
With large capacity bidirectional energy-storage device, has access to power grid realization and be incorporated into the power networks；The device being capable of control synchronous with diesel engine simultaneously
System realizes the power combing of uninterruptible power supply and diesel engine, provides the energy of high overload for high-power living load；
2) in the first rectification inverter circuit and the second rectification inverter circuit Parallel Control, Systematic selection optimum virtual electricity
Resistance value effectively inhibits circulation so that circulation and power loss reach minimum；
3) this system has energy-storage function with the first filtering energy-storage units and second filtering two parts of energy-storage units.
When there is impact load, system is enable to respond quickly, while energy-storage system preferentially uses renewable energy, meets making for diesel engine
With.The purpose that reduced parameter design, shortening response time and mains by harmonics are inhibited is effectively achieved.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (9)
1. a kind of integrated energy storage type MW class uninterruptible power system, which is characterized in that including sequentially connected input control
And isolation circuit, rectification inverter circuit group, output filtering and isolation circuit and output switching circuit；The rectification inverter circuit
Group includes the first rectification inverter circuit and the second rectification inverter circuit being connected in parallel；The input and isolation circuit are for being
The rectification inverter circuit group provides AC power source, and carries out electrical isolation；The rectification inverter circuit group is used for the friendship
Galvanic electricity source carries out commutation inversion, obtains three-phase alternating-current supply；The output filtering and isolation circuit are used for the three-phase alternating current
Power supply is filtered, and carries out electrical isolation；The output switching circuit be used for by filtered three-phase alternating-current supply export to
Load.
2. MW class uninterruptible power system according to claim 1, which is characterized in that the input control and isolation electricity
Road includes sequentially connected input control unit and isolating transformer；The input control unit is used to provide AC power source,
The isolating transformer includes primary coil, the first secondary coil and the second secondary coil；Described in the primary coil connection
First output end of input control unit, first secondary coil connect the input terminal of first rectification inverter circuit, institute
State the input terminal that the second secondary coil connects second rectification inverter circuit.
3. MW class uninterruptible power system according to claim 2, which is characterized in that first rectification inverter circuit
Including sequentially connected first rectification and charhing unit, the first filtering energy-storage units and the first DC/AC inversion unit；Described
Two rectification inverter circuits include sequentially connected second rectification and charhing unit, the second filtering energy-storage units and the 2nd DC/AC
Inversion unit；The input terminal of first rectification and charhing unit connects first secondary coil, and described second rectifies and fill
The input terminal of electric unit connects second secondary coil；The output end and described second of the first DC/AC inversion unit
The output end of DC/AC inversion unit is all connected with the input terminal of the output filtering and isolation circuit.
4. MW class uninterruptible power system according to claim 3, which is characterized in that the output filtering and isolation electricity
Road includes the first output filter unit, the second output filter unit and output isolation transformer；The first output filtering is single
The input terminal of member connects the output end of the first DC/AC inversion unit, the input terminal connection of the second output filter unit
The output end of the 2nd DC/AC inversion unit, the output end of the first output filter unit and the second output filter
The output end of wave unit is all connected with the primary coil of the output isolation transformer, the secondary coil of the output isolation transformer
Connect the input terminal of the output switching circuit.
5. MW class uninterruptible power system according to claim 4, which is characterized in that the output switching circuit includes
First switching switching group and second switching switching group；The input terminal of the first switching switching group connects the output isolation
The input terminal of the secondary coil of transformer, the second switching switching group connects the second output terminal of the input control unit；
The output end of the output end of the first switching switching group and the second switching switch connects load.
6. MW class uninterruptible power system according to claim 1, which is characterized in that first rectification inverter circuit
And second rectification inverter circuit is 500KW rectification inverter circuit.
7. MW class uninterruptible power system according to claim 3, which is characterized in that the first DC/AC inversion list
The first and described 2nd DC/AC inversion unit is six pipe topological structure of three-phase.
8. MW class uninterruptible power system according to claim 3, which is characterized in that first rectification and charging are single
First and described second rectification and charhing unit are six pipe topological structure of three-phase.
9. MW class uninterruptible power system according to claim 3, which is characterized in that the first filtering energy-storage units
And the second filtering energy-storage units are made of battery and large capacity busbar filter capacitor.
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| CN201910022625.0A CN109660014A (en) | 2019-01-10 | 2019-01-10 | A kind of integrated energy storage type MW class uninterruptible power system |
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| CN201910022625.0A CN109660014A (en) | 2019-01-10 | 2019-01-10 | A kind of integrated energy storage type MW class uninterruptible power system |
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Application publication date: 20190419 |